Question

factorisation: (x^2-y^2) (a^2-b^2) +4abxy
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Answer 1

Answer:

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Answer 2

Step-by-step explanation:

(x^2 - y^2)(a^2 - b^2) + 4abxy

=> a^2x^2 + b^2y^2 + 2abxy - (a^2y^2 - 2abxy + b^2x^2)

=> (ax + by)^2 - (ay - bx)^2

=> (ax + by + ay - bx)(ax + by - ay + bx)